toolbar.addFixed(UISupport.createToolbarButton(new AddAction()));
deleteButton = UISupport.createToolbarButton(new DeleteAction());
deleteButton.setEnabled(false);
toolbar.addFixed(deleteButton);
toolbar.addSeparator();
copyButton = UISupport.createToolbarButton(new CopyAction());
copyButton.setEnabled(false);
toolbar.addFixed(copyButton);
renameButton = UISupport.createToolbarButton(new RenameAction());
renameButton.setEnabled(false);